Lock



' Feb; 2 192s.

R. E. CROSSLEY LOCK Filed Dec. 4,, 1923 N LMMH I N VEN TOR.

ATTORNEYS.

Patented Feb. 2, 1926.

car

rr cs.

ROYAL E. CROS$LEY, OF SYRACUSE, ll'IEW' Yill't'lii, ASSIG-NUR TO CROUSE-HINDS C OM- PANY, OF SYRACUSE, NEW" YORK, Ii. GORFORATIGII OF NEW YORK.

LOCK.

Application filed Beoeniber 7 0 all whom it may concern.

Be it known that I, ROYAL E. Cnossrnr, a citizen of the United States, and a resident of Syracuse, in the county of Gnondag'a and State of New York, have invented a certain new and useful Lock, of which the following is; a specification.

This invention has for its object a particularly simple and efficient locking means for holding; two parts together as a box and cover therefor, or, more particularly, the door of the headlight to the body or casing of the headlight, to prevent tampering with the light by curious persons or theft of the lamp.

The invention consists in the novel features and in the combinations and constructions hereinafter set forth and claimed.

In describing; this invention, reference is had to the accompanying drawings in which like characters designate corresponding parts in all the views.

Figure 1 is a face View of the headlight showing; this lock in front end elevation.

Figure 2 is a fragmentary, vertlcal, sectional view thereof, the key being also shown.

Figure 3 is an end view of the key.

1 and 2 designate, respectively, parts to be fastened together as the body or casing of the headlight and the door hinged at 3 thereto.

The lock comprises a rotatable member having; a head and an axial shank extending through the parts 1, 2 provided with means for interlocking; with the innermost part 1 and unlocking therefrom upon the turning of the locking member, the head being formed with a socket arranged eccentric relatively to the axis of the shank and open ing through the end face of the head or exposed atthe outer end of the head. The key or wrench for the lock has an eccentric pin at one end for entering the socket and end surfaces for engaging the surface of the head around the socket.

The head is, also, provided with a guide for engaging a key and keeping it centered during the turningof the key, while its eccentric pin is acting in the eccentric socket to turn the locking; member.

l designates a locking; member having a head 5 and an axial shank, the shank extending through the margin of the door 2 4, 1923. Serial No. 673,530.

through the contiguous part of the case 1 and interlocking with the case 1, it being here shown, as having its inner end threaded at (i and turning into the threaded hole in the case 1.

7 is the eccentric socket in the head and is a cylindrical countersink in the head and opening through the outer end face thereof, the countersink being substantially concentric with the axis of the shank, this countersink forms a guide for holding the key centered in line with the axis of the locking; member.

9 is the key which comprises a cylindrical body having an eccentric pin 10 at one end for enteringthe socket 7. the cylindrical body substantially fitting the countersink 8, ISO that, when the key is turned with an eccentric pin in the socket, the key is held centered with the shank by the countersink. Preferably, in order to prevent the turning of the locking member or to render the turning thereof extremely di'liicult, except with the proper key. the door 2 is provided with a recess 11 inclosing the head 5.

Owing to the eccentric socket and cylindrical guide or countersink, the head can be formed cylindrical and housed in a cylindrical recess making it inaccessible, except with a proper key and the key guided in its turning movement by the cylindrical countcrsink.

This lock is particularly advantageous in that it is particularly economical in construction, highly eliicicnt in operation and can be readily formed from stock material.

What I claim is:

1. A look for holding two parts together comprising a rotatable member having a head and axial shank extending through said parts and provided with means for in terlocking therewith and unlocking therefrom upon the turning of said member, the head being formed with a socket and countersink concentric with the axis of the shank, the socket opening eccentrically through the bottom of the countersink, in combination with a key having a cylindrical body substantially fitting the countersink and an eccentric pin for entering said socket.

2. The combination of two separable parts, a lock for holding said two parts together comprising a rotatable member having a head and axial shank extending Ill) through said parts and provided with means for interlocking therewith and unlocking therefrom upon the turning of said member, the head beng formed with a. socket and a countersink concentric with the axis of the shank, the socket opening eccentrically through the bottom of the countersink, and a key having a cylindrical body substantially fitting the countersink and an eccentric pin for entering said socket, one of said parts having a recess enclosing the head.

3. A look for holding two parts together comprising a rotatable member having a head and an axial threaded shank extending through, said parts and threading into one of said parts, the head being formed with a socket and a countersink concentric with the axis of the shank, the socket opening eccentrically through the bottom of the countersink, in combination with a key having a cylindrical body substantially fitting the countersink and an eccentric pin for entering the socket.

4. The combination of two separable parts, a lock for holding said two parts together comprising a rotatable member having a head and an axial threaded shank extending through said parts and threading into one of said parts, the head being formed with a socket and a countersink concentric with the axis of the shank, the socket opening eccentrically through the bottom of the countersink, and a key having a cylindrical body substantially fitting the countersink and an eccentric pin for entering the socket, one of said parts being formed with a recess enclosing the head.

In testimony whereof, I have hereunto s gned my name at Syracuse, in the county of Onondaga, and State of New York, this 19th day of October, 1923- ROYAL E. CROSSLEY. 

